package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.annotation.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.enumeration.OperationType;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
     @Override
    public void save(EmployeeDTO employeeDTO) {
       Employee employee = new Employee();
       // 对象属性拷贝
         BeanUtils.copyProperties(employeeDTO,employee);  //从DTO属性拷贝到实体属性employee
       //设置账号状态 1为启用 0为禁用
         employee.setStatus(StatusConstant.ENABLE);
         //设置默认密码
         employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
         //设置创建时间和修改时间
//          employee.setCreateTime(LocalDateTime.now());
//          employee.setUpdateTime(LocalDateTime.now());

          // 设置创建人id和修改人id
         // TODO 后期改为当前登录用户的id
//          employee.setCreateUser(BaseContext.getCurrentId());   //取id
//          employee.setUpdateUser(BaseContext.getCurrentId());

          employeeMapper.insert(employee);
     }

    @Override
    public PageResult pageQuerty(EmployeePageQueryDTO employeePageQueryDTO) {
        // select * from employee limit 0,10
        // 开始分页查询
        // employeePageQueryDTO.getPage()获得传进来的页码 employeePageQueryDTO.getPageSize()获得每页的条数
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);

        long total = page.getTotal();
        List<Employee> records = page.getResult();
         return new PageResult(total,records);
    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {

//        Employee employee = new Employee();
//        employee.setStatus(status);
//        employee.setId(id);

        // 构造器方法创建对象
        Employee employee =Employee.builder()
                        .status(status)
                         .id(id)
                         .build();
        employeeMapper.update(employee);
    }

    /**
     *根据id进行员工信息查询
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        Employee employee =employeeMapper.getById(id);
        employee.setPassword("****");
        return employee;
    }

    /**
     *员工信息修改
     * @param employeeDTO
     * @return
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);  //从DTO属性拷贝到实体属性employee

        // employeeDTO 没有下列属性 要手动设置
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.update(employee);
    }


}
